| 摘要 |
PURPOSE:To improve the battery characteristics such as charging/discharging cycle, by burning, as a cobaltic source, a mixture of a specified cobalt oxide and a lithium salt in the atmosphere of oxidization. CONSTITUTION:A cobalt oxide, wherein a plurality of primary particles, almost ellipto-spherical and having an average particle size of 1mum or less, are connected to each other is used as a cobaltic source. This mixture of cobalt oxide and lithium salt is burned at a temperature range of 600 deg.C to 1100 deg.C and in an atmosphere of oxidization, thus being synthesized. Then, a stainless steel having an organic-electrolyte resistance is machined to prepare a battery casing 1, which is in turn provided with a sealing plate 2 having a relief valve and an insulative packing 3. Then, lithium perchlorate is dissolved and then is injected into a pole-plate group 4. The resulting battery is sealed. If a composite oxide expressed by the formula: LixCoO2 (0.90<=x<=1.05) is used as a positive electrode active material, a battery having a high-voltage and a high-capacity characteristic and excellent charging/discharging cycle characteristic can be manufactured. |
